a wial back i bot a hpd pipe but i lost bottom end. i thot this was a bottom end pipe, i raced a stock tb and he beet me buy 2 lenths off the line but once i got to 2000 rpm i blew buy it like nothing , what could fix this problem??

 

You NEED a clutch kit to make the pipe work properly. Without it the pipe will not work very well. You can get an HPD agressive clutch kit to match the pipe and this will give you your bottom end back. The HPD trail pipa and clutch kit will kill a stock trailblazer. Do you know if it is the trail pipe or not?

 

i do not no i ordered it and they said it was a HPD tork pipe.

 

couldnt u just get a stiffer spring liek the main one when u take the cover off the clutch. i have already done this but i think it was the green spring i switched to. could i buy just the primery clutch spring instead of the hole kid witch costs a bit of money.